pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 244

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

www.national.com
14.3 AC ELECTRICAL CHARACTERISTICS
14.3.1 AC Test Conditions T
Notes:
1. C
2. S
3. For the FDC open-drive interface pins, S
14.3.2 Clock Timing
Input
Load Circuit
S
S
R
1
1
1
L
L
= Open for push-pull output pins.
= V
= GND for high impedance to active high and active high to high impedance measurements.
= 100 pF, includes jig and scope capacitance.
= 1.0K for P interface pins.
DD
for high impedance to active low and active low to high impedance measurements.
TABLE 14-42. Clock TimingFor the 14.31818MHz clock, required tolerance is 200 ppm (max).
0.1 f
t
t
t
(Notes 1, 2, 3)
CH
CL
CP
Symbol
FIGURE 14-1. AC Test Conditions, T
1. Not tested. Guaranteed by design.
2. For the 14.31818MHz clock, required tolerance is 200 ppm (max).
Device
Under
V
Test
DD
Clock High Pulse Width
Clock Low Pulse Width
Clock Period
Internal Clock Period (See TABLE 14-43.)
Data Rate Period (See TABLE 14-43.)
A
= 0 C to 70 C, V
Parameter
R
L
S
1 2
1
1
= V
C
L
DD
Device Specifications
Output
DD
and R
1
1
= 5.0 V 10%
L
244
= 150 .
A
Min
16
16
40
= 0 C to 70 C, V
2.4
0.4
24MHz
AC Testing Input, Output Waveform
Max
43
2.0
0.8
Min
8.4
8.4
20
DD
48MHz
= 5.0 V 10%
Test Points
Max
21.5
nsec
nsec
nsec
Unit
2.0
0.8